[QGIS-Developer] Problem with atlas rule-based styling

[Andreas Neumann]

Hi Nyall,

Fair enough - for some use cases.

Still I don't like that there is no way of correctly exiting "Atlas 
printing mode" in the main canvas. If print composer is closed, the 
symbology is still influenced by Atlas. Not so nice. I think a user 
would expect that if Atlas is not active anymore (say if the Atlas 
preview is inactive) or at least when the print composer containing 
Atlas is closed, that the symbology would be back to normal.

Should I open an issue about this behaviour?

Andreas


On 15.09.2017 10:37, Nyall Dawson wrote:
> On 15 September 2017 at 18:30, Andreas Neumann <a.neumann at carto.net> wrote:
>> Answering myself:
>>
>> by adding in the @map_id variable into the rule I can avoid that the main
>> map canvas gets changed. My particular problem is thus solved.
>>
>> But the question remains: why is the Atlas printing feature changing the
>> main map canvas at all? Anything done in the print composer should have no
>> influence on the rendering in the main canvas in my opinion. Other thoughts?
>> Can this be fixed with QGIS 3 ?
> It was by design originally, allowing the symbology and labeling rules
> to be tweaked in the canvas and see immediately the result this would
> have.
>
> Otherwise you'd need to keep changing settings -> flipping to composer
> and refreshing -> then back to canvas to tweak again.
>
> Nyall
>
>> Thanks,
>> Andreas
>>
>> On 14.09.2017 18:34, Andreas Neumann wrote:
>>> Hi,
>>>
>>> I use a rule-based styling to distinguish the feature is currently active
>>> in Atlas from other features that aren't active.
>>>
>>> This is my very simple rule:
>>>
>>> $id =  @atlas_featureid
>>>
>>> The problem is when I close the atlas data sheet (print composer) - then
>>> the symbology rule still remains active in the main map.
>>>
>>> Is there a way around this problem? Can I detect if the print composer
>>> atlas sheet is open or closed?
>>>
>>> Thanks for any ideas,
>>>
>>> Andreas
>>>
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